Reported Aug 6, 1980253,500 vehicles affectedFORD MOTOR COMPANYBuilt Aug 1, 1973 – Aug 1, 1974
The defect
Some of the engine cooling fans on the involved vehicles may be subject to high blade stresses that can result from resonant vibration inputs occurring during normal vehicle operation.
The remedy
The dealer will replace the existing engine cooling fans with fans of a different five blade design at no charge to owner.
Vehicle description: passenger vehicles equipped with 400 cid engines (fiveblade engine cooling fans).system: engine and engine cooling; fans.consequences of defect: this condition can result in fatigue cracking of bladesand fragments eventually may separate without prior warning from a crackedblade. Fragments propelled from the rotating fan could cause damage tounderhood components and could result in personal injury if the hood IS open atthe time.note: it IS imperative that the defect be corrected before any service isperformed with the hood open and the engine running.